Beware. That resolution might mean that the screen was produced for landscape viewing. If that's true, it will be quite horrible to use in portrait. It will show slightly different colors to each of your eyes which will make the screen seem slightly semitransparent and silvery. I have this problem with a Sandisk Sansa mp3 player I have.
The WIFI is on-board. Ethernet,usb,etc are supposed to be provided through a docking station (which I haven't seen anywhere). If you view the video included in the article, they mention this as well as point out the WIFI led on the device.
It comes with Android 1.6 but there's a comment on the above website saying it can be upgraded. You can also find it for less than $100 on sites like alibaba.com and dhgate.com but you will have to buy more than one unit.
At my current location in Europe, low cost items usually pass through customs without a lot of extra tax, although sometimes it comes down to luck. Should be 20%-25% total if they decide to tax it.
On a sidenote, the seller I linked to is flexible about what price they stick on your package. You don't want to overdo it though, otherwise you might end up paying even more tax than normal.
I don't know about Netherlands, but in Spain you can contest any customs tax. They send you a printed form to fill if you want to contest it in the same envelope where they send you the invoice for the tax. Things can't be very different there.
